/Engine/Source/Editor/Sequencer/Public/IKeyArea.h
Get the time of the key represented by the specified handle
The key's time, orTNumericLimits::Lowest()if the handle was not valid
[FFrameNumber](API\Runtime\Core\Misc\FFrameNumber) GetKeyTime ( [FKeyHandle](API\Runtime\Engine\Curves\FKeyHandle) InKeyHandle ) const